Hw416b Pir Sensor Datasheet Better ^hot^ < 2025 >

The potentiometer labeled adjusts how long the OUT pin remains HIGH after motion stops. Counter-clockwise: Minimum time (5s). Clockwise: Maximum time (300s or 5 minutes). C. Trigger Mode Jumper

| Feature | Standard HC-SR501 | HW416B / Mini PIR (Likely Target) | Winner? | | :--- | :--- | :--- | :--- | | | Large (32mm x 24mm) | Tiny (approx 10mm - 15mm) | HW416B | | Adjustability | Potentiometers for Time/Range | Usually Fixed (Hardware hacks needed) | HC-SR501 | | Aesthetics | Raw PCB, bulky | White dome, sleek | HW416B | | Power Use | Higher (~50uA - 60uA) | Lower (~15uA - 20uA) | HW416B | | Price | ~$1.50 - $2.00 | ~$1.00 - $1.50 | HW416B |

— “HW416B” could be a specific board silkscreen from an unbranded supplier (AliExpress, Amazon, etc.). No official datasheet exists, but specifications typically mirror HC-SR501. hw416b pir sensor datasheet better

At first glance, it looks identical to the famous HC-SR501. In fact, the HW416B is often considered a direct, sometimes improved, clone of that design. But here is the problem every maker faces:

Adjustable (typically 2 seconds to 200 seconds). The potentiometer labeled adjusts how long the OUT

This control determines how long the output remains HIGH after motion is detected. The delay is adjustable from approximately .

// PIR Motion Sensor with Arduino (HW416B / HC-SR501) int pirPin = 2; // OUT pin connected to digital pin 2 int ledPin = 13; // Built-in LED or a starter kit

Allows for detection distance control.

If you bought a bundle of "HW-416B" PIR sensors from Amazon, AliExpress, or a starter kit, you probably noticed something frustrating:

Features enhanced sensitivity adjustment compared to earlier or cheaper knockoffs.